Disease, plague, death...
The Dream Spirit World is the convergence of all information in the world.
While there, a vast amount of information poured into Su Lu, intermingled with massive quantities of despair and fear.
However, he was a god, and these negative emotions did not affect him at all.
Various pieces of intelligence gathered in his mind:
"The main civilization of this world is a kingdom called Maximilian, which leans towards technology."
Different Worlds, due to different rules, have different levels of technological development.
Generally speaking, worlds with Micro Demons or No Magic, are more suitable for the development of technology.
Yet, in worlds where the Transcendent and the Mysterious are strong, their force and the mystical elements dominate.
As for transplanting the technology of different worlds to other worlds? It isn't impossible, but there is the issue of incompatible rules.